This study investigates the feasibility of using granulated blast furnace slag (GBFS) as fine aggregates for high-performance cement-based (HPCB) materials. The mixture ratio of HPCB materials using GBFS as fine aggregates is calculated based on the dense packing theory of aggregates and the minimum water requirement. A series of cement-based material mixes are prepared with three water binder ratios (0.16, 0.18, and 0.2) and three GBFS replacement ratios (0%, 50%, and 100%). Various properties of the cement-based materials, such as the compressive strength, flexural strength, splitting tensile strength, and elastic modulus, are studied. The research on the selected HPCB material compositions using scanning electronic microscopy (SEM), hardened concrete pore structure determination (HCPD), and mercury intrusion porosimetry (MIP) enables a further understanding of the relationship between the mechanical properties and microstructures. The test results show that it is feasible to produce HPCB materials using GBFS as fine aggregates. Despite its large crushing value index and irregular particle shape, GBFS has hydraulic properties that can make up for these disadvantages. GBFS and mixed fine aggregate cement-based materials with good properties can be prepared with a reasonable mix design. The strength of such cement-based materials is consistent with that of ordinary quartz sand (QS) fine aggregate cement-based materials. The compressive, flexural, and splitting tensile strengths of GBFS and mixed fine aggregate cement-based materials may be higher than those of ordinary QS fine aggregate HPCB materials. The relationship between the compressive strength and porosity is in agreement with the formulas proposed by Powers, Ryshkevitch, Schiller, and Hasselman.

本研究调查了将粒状高炉矿渣（GBFS）用作高性能水泥基（HPCB）材料的细骨料的可行性。基于骨料的致密堆积理论和最低需水量，计算了使用GBFS作为细骨料的HPCB材料的混合比。制备了一系列水泥基材料混合物，具有三种水粘合剂比率（0.16、0.18和0.2）和三种GBFS替代比率（0％，50％和100％）。研究了水泥基材料的各种性能，例如抗压强度，抗弯强度，劈裂抗张强度和弹性模量。使用扫描电子显微镜（SEM），硬化混凝土孔结构测定（HCPD）对选定的HPCB材料成分进行研究，压汞法（MIP）使人们可以进一步了解机械性能和微观结构之间的关系。测试结果表明，使用GBFS作为细骨料生产HPCB材料是可行的。尽管GBFS的破碎价值指数高且颗粒形状不规则，但其水硬性可以弥补这些缺点。GBFS和具有良好性能的混合细骨料水泥基材料可以通过合理的混合设计来制备。这种水泥基材料的强度与普通石英砂（QS）细骨料水泥基材料的强度一致。GBFS和混合的细骨料水泥基材料的抗压，挠曲和劈裂抗拉强度可能高于普通QS细骨料HPCB材料。